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upload.jsp
<%@ page language="java" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
    <head>
        <title>My JSP ''upload.jsp'' starting page</title>
        <script type="text/javascript">
    var xmlHttp ;
    function createXMLHttp(){
        if(window.ActiveXObject){
            xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
        }
        else{
            xmlHttp = new XMLHttpRequest() ;
        }
    }
   
    function ajaxSend(){
        createXMLHttp() ;
        var content = "status" ;
        var url ="upload?status="+content ;
        xmlHttp.onreadystatechange = handler ;
        xmlHttp.open("POST",url,true) ;
        //xmlHttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
        xmlHttp.send(url) ;
    }
    function handler(){
    ¡¡if(xmlHttp.readyState == 4)    ¡¡{
    ¡¡¡¡if(xmlHttp.status == 200)    ¡¡¡¡{
            var percent = xmlHttp.responseText ;
            var com = document.getElementById("com") ;
        


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